Collapsible bar



Patented July 3, 1928.

UNITED STATES" PATENT OFFICE.

NEWTON N. BROWN, OF RACINE, WISCONSIN, ASSIGNOR TO GOLD MEDAL CAMPFURNI- TUBE MANUFACTURING COMPANY, OF RACINE, WISCONSIN, A CORPORATIONOF WISCONSIN.

COLLAPSIBLE BAR.

Application filed July 28, 1924.

This invention relates to collapsible bars and the object of theinvention is to improve the construction and operation of collapsiblebars in the manner to be hereinafter described and claimed.

Referring to the drawings which accompany this specification and form apart hereof, which drawings illustrate an embodiment of this invention,and on which drawings the same reference characters are used todesignate the same parts wherever they may appear in each of the severalviews, Fig. 1 is an elevation of a collapsible bar, parts being brokenaway; Fig. 2 is a plan view of the bar showing the parts in theircollapsed position; Fig. 3 is an elevation of parts, drawn to anenlarged scale; Fig. 41s a cross section taken on the line 44 on Fig. 3,looking in the direction indicated by the arrows; Fig. 5 is a plan viewof the parts shown by Fig. 3; and Fig. 6 is an elevation of the partsshown by Fig. 3, but with parts shown as occupying different positionsand with a part broken away.

Referring to the drawings, the reference numeral 1 designates,generally, a collapsible bar which is of such a character that it can beused for a side bar or a center bar for cots such as the kind shown forexample, in my pending application for Letter Patent for folding doublecot, Serial Number 498,724, filed September 6, 1921. The collapsible bar1 is illustrated as composed of cylindrical, wooden parts 2, 3 and 4which are joined together by hinge members 5 and 6. Metal loops 7 areprovided on one side of the bar to engage with hooks on a cot,'notshown, and the hinge members 5 and 6 are so con structed and arranged asto prevent bending or deflection in one direction while the bar is inuse. The drawings illustrate the cylindrical, wooden rods or parts 2, 3and 4 as provided with flat seats 8 to receive flat, metal hinge members9 which have no special characteristics of construction except that eachis provided with a shoulder 10 and is adapted to be immovably secured toits part of the bar. Link hinge members 11 are provi-ded with shoulders12 and 13 adapted to abut the shoulders 10 on the coacting hinge members9 to prevent further relative movements of the parts in one directionwhile permitting freedom of movement with re- Serial No. 728,544.

spect to each other in the opposite direction. The drawings illustrate asimple manner of provlding the link hinge members 11 with shoulders 12and 13. The link hinge members 11 are illustrated as made from sheetmetal with a lip 14 and the edge 15 of the lip 14 is bent over into theplane of the shoulders 10 on the coacting hinge members 9.

The hinge pins 16, which are illustrated by the drawings as rivets, passthrough two hinge members 9, two link hinge members 11 and a part of thebar. In order to secure the hinge members 9 to the parts of the barimmovably, that is to say, so that they cannot rotate with respect tohinge pins 16, either the metal loops 7 or rivets 17 may be used assecuring means.

The method of extending or collapsing the bar will be obvious from theforegoing description and from an inspection of the drawlngs, but itshould be noted, referring to Fig. 1 of the drawings, that the part 2can be folded down under the part 3 and that the part 4 can be folded upover the part 3, and the question might arise how can the bar ever berigid with such a construction. It should be noted that the bar issupported by the metal loops 7 when in use, and by reason thereofrelative folding of the sections of the bar is prevented. WVhen the baris removed from the hooks, it may be readily collapsed, as shown forinstance in Fig. 2.

It will be obvious to those skilled in the art that the presentimprovements are susceptlcle to various changes and modifications and isnot desired, therefore, to limit or restrlct the same to the particularconstruct1on or arrangement of parts herein illustrated and described,except where limitatlons appear in the appended claims.

The invention claimed is:

A hinge of the character described comprising a plurality of hingeplates adapted to be secured to the adjacent ends of the parts to behinged together, said plates havlng their confronting end portionsnotched to provide opposed abutments, a pivot pin associated with eachof said plates, and a hinge link plate mounted on said pins andextending between said hinge plate, said hinge link plate having areduced lip along one edge thereof, said reduce-d lip having an inturnededge flange, the ends of which provide rigid shoulders engageable withthe rigid abutments afforded by said notches. I

2. A hinge of the'type described compris- 5 ing a plurality of hingeplates adapted to be secured .to the adjacent ends of the parts to behinged together, said hingeplates being formed" witli Opposed rigidabutments, a pivot pin associated with each of said hinge 10 plates anda hinge member mounted on said pins and extending between said hingeplates, said hinge member being formed With rigid and unyieldingshoulders designed to engage with said rigid abutments to limit relativemovement of said parts in one direction, said shoulders and the portionsof the hinge member between the same being subjected to compression andshearing stresses only and being entirelyrelieved of bending, twistingor distorting strains.

V -In witness whereof I hereto affix my signature.

' NEWTON N. BROWN.

